No screen capture app in the playstore works as described on a non-rooted phone. None of these work except via the painfully awkward power + volume buttons. I happen to have nerve damage in my hands from cancer and on my Motorola it's all but impossible.

Why can't someone develop a simple app to:

1. Tap a widget.
2.Long press anywhere.
3. Done.

How hard can that be? It sounds like a fun project for a developer too.